REXROTH MKE Series Technical manual

R911297663
Edition 03
Rexroth MKE synchronous motors
for potentially hazardous areas
acc. to ATEX and UL/CSA guidelines
Project Planning Manual
Industrial
Hydraulics
Electric Drives
and Controls
Linear Motion and
Assembly Technologies Pneumatics
Service
Automation
Mobile
Hydraulics

About this Documentation MKE
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
Rexroth MKE synchronous motors
for potentially hazardous areas
acc. to ATEX and UL/CSA guidelines
Project Planning Manual
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
Document Number: 120-1500-B326-03/EN
This documentation describes …
•Explains the features of the product, possibilities for use, conditions
for use and operational limits
•Contains technical data regarding the motors that can be supplied
•Provides information regarding product selection, handling and
operation
Description Release
Date Notes
DOK-MOTOR*-MKE*GEN2***-PR01-EN-P 06/03 1st edition (not printed)
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P 02/04 2nd edition
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P 03/04 3rd edition
2004 Bosch Rexroth AG
Copying this document, giving it to others and the use or communication
of the contents thereof without express authority, are forbidden.
Offenders are liable for the payment of damages. All rights are reserved
in the event of the grant of a patent or the registration of a utility model
or design (DIN 34-1).
The specified data is for product description purposes only and may not
be deemed to be guaranteed unless expressly confirmed in the contract.
All rights are reserved with respect to the content of this documentation
and the availability of the product.
Bosch Rexroth AG
Bgm.-Dr.-Nebel-Str. 2 •D-97816 Lohr a. Main
Telephone +49 (0)93 52/40-0 •Tx 68 94 21 •Fax +49 (0)93 52/40-48 85
http://www.boschrexroth.com/
Dept. BRC/EDM2 (MH/JW)
This document has been printed on chlorine-free bleached paper.
Title
Type of Documentation
Document Typecode
Internal File Reference
Purpose of Documentation
Record of Revisions
Copyright
Validity
Published by
Note

MKE Contents I
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
Contents
1 Introduction to the Product 1-1
1.1 MKE.........................................................................................................................................1-1
1.2 About this documentation.........................................................................................................1-3
2 Important Instructions on Use 2-1
2.1 Intended Use............................................................................................................................2-1
Introduction .........................................................................................................................2-1
Fields of Use and Application ..............................................................................................2-2
2.2 Non-Intended Use....................................................................................................................2-2
3 Safety Instructions for Electric Drives and Controls 3-1
3.1 Introduction..............................................................................................................................3-1
3.2 Explanations ............................................................................................................................3-1
3.3 Hazards by Improper Use.........................................................................................................3-2
3.4 General Information..................................................................................................................3-3
3.5 Protection Against Contact with Electrical Parts........................................................................3-5
3.6 Protection Against Electric Shock by Protective Low Voltage (PELV)........................................3-6
3.7 Protection Against Dangerous Movements...............................................................................3-7
3.8 Protection Against Magnetic and Electromagnetic Fields During Operation and
Mounting..................................................................................................................................3-9
3.9 Protection Against Contact with Hot Parts...............................................................................3-10
3.10 Protection During Handling and Mounting...............................................................................3-11
3.11 Battery Safety.........................................................................................................................3-12
3.12 Protection Against Pressurized Systems.................................................................................3-13
4 Technical data 4-1
4.1 Description...............................................................................................................................4-1
Operating Modes.................................................................................................................4-2
Definition of Parameters......................................................................................................4-3
4.2 Technical Data MKE037...........................................................................................................4-6
Technical data sheet and characteristic curves....................................................................4-6
Shaft loads..........................................................................................................................4-8
4.3 Technical Data MKE047.........................................................................................................4-10
Technical data sheet and characteristic curves..................................................................4-10
Shaft loads........................................................................................................................4-12
4.4 Technical Data MKE098.........................................................................................................4-14
Data sheet and characteristic curves .................................................................................4-14
Shaft loads........................................................................................................................4-16
4.5 Technical Data MKE118.........................................................................................................4-18

II Contents MKE
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
Data sheet and characteristic curves .................................................................................4-18
Shaft loads........................................................................................................................4-22
5 Dimensional Details 5-1
5.1 Size 037...................................................................................................................................5-1
5.2 Size 047...................................................................................................................................5-4
5.3 Size 098...................................................................................................................................5-7
5.4 Size 118.................................................................................................................................5-10
6 Type Code 6-1
6.1 Description...............................................................................................................................6-1
6.2 Type code size 037..................................................................................................................6-6
6.3 Type code size 047..................................................................................................................6-7
6.4 Type code size 098..................................................................................................................6-8
6.5 Type code size 118..................................................................................................................6-9
7 Accessories and Options 7-1
7.1 Motor encoder..........................................................................................................................7-1
7.2 Holding Brakes.........................................................................................................................7-3
7.3 Gearboxes...............................................................................................................................7-4
Planetary gearbox...............................................................................................................7-4
8 Connection System 8-1
8.1 Overview..................................................................................................................................8-1
Connection temperature control...........................................................................................8-2
Additional protective conductor............................................................................................8-2
Connection Cable................................................................................................................8-3
8.2 Motor connection according to European standard (EN)...........................................................8-4
8.3 Connection according to American standard (UL).....................................................................8-5
8.4 Dimensioning power cable........................................................................................................8-6
8.5 Recommendation for handling and application, Cable assembly in drag chains ........................8-7
9 Notes Regarding Application 9-1
9.1 Hazardous areas......................................................................................................................9-1
Designation and definition ...................................................................................................9-1
Application conditions for MKE motors.................................................................................9-6
Type test of the motors according to European standard (EN) .............................................9-9
Type test of the motors according to American standard (UL)............................................9-11
9.2 Setup Height and Ambient Temperature.................................................................................9-13
9.3 Protection class......................................................................................................................9-14
9.4 Compatibility ..........................................................................................................................9-14
9.5 Design and Installation Positions............................................................................................9-15
9.6 Prime Coat and Housing Varnish............................................................................................9-15
9.7 Vibration and Shock Loads.....................................................................................................9-16
9.8 Output shaft and shaft sealing ring .........................................................................................9-17
Smooth shaft.....................................................................................................................9-17

MKE Contents III
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
Output shaft with fitting key................................................................................................9-17
Output Shaft With Shaft Sealing Ring................................................................................9-18
9.9 Bearings and Shaft Load........................................................................................................9-20
9.10 Holding Brakes.......................................................................................................................9-24
Selecting Holding Brakes...................................................................................................9-25
Sizing of Holding Brakes (Application) ...............................................................................9-26
9.11 Acceptance and allowance.....................................................................................................9-27
Motors in EU style .............................................................................................................9-27
Motors in UL style..............................................................................................................9-28
10 Handling, Transport and Storage 10-1
10.1 Supplied Condition.................................................................................................................10-1
Factory-attached test.........................................................................................................10-1
Test on the customer side .................................................................................................10-1
10.2 Identification...........................................................................................................................10-2
Shipping documents and delivery note...............................................................................10-2
Name plate........................................................................................................................10-2
10.3 Transport and storage............................................................................................................10-3
11 Installation 11-1
11.1 Safety ....................................................................................................................................11-1
11.2 Skilled technical personnel.....................................................................................................11-1
11.3 Mechanical mounting –Motor assembly.................................................................................11-2
Mounting the flange...........................................................................................................11-2
Preparation .......................................................................................................................11-2
Assembly ..........................................................................................................................11-3
11.4 Electrical connection –Motor connection................................................................................11-3
Motor connection according to European standard (EN)....................................................11-4
Motor connection according to American standard (UL)...................................................11-11
12 Startup, Operation and Maintenance 12-1
12.1 Commissioning.......................................................................................................................12-1
12.2 Operation...............................................................................................................................12-1
12.3 Deactivation...........................................................................................................................12-2
12.4 Maintenance ..........................................................................................................................12-2
Cleaning............................................................................................................................12-2
Bearing .............................................................................................................................12-3
Connection Cable..............................................................................................................12-3
Holding brake....................................................................................................................12-4
Changing the battery.........................................................................................................12-5
12.5 Troubleshooting .....................................................................................................................12-7
12.6 Dismantling............................................................................................................................12-7
12.7 Waste disposal.......................................................................................................................12-8
13 Appendix 13-1
13.1 List of standards.....................................................................................................................13-1

IV Contents MKE
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
13.2 Selection of connection cable.................................................................................................13-3
Power cables.....................................................................................................................13-4
Encoder cable ...................................................................................................................13-7
13.3 Declaration of conformity........................................................................................................13-9
14 Service & Support 14-1
14.1 Helpdesk................................................................................................................................14-1
14.2 Service-Hotline.......................................................................................................................14-1
14.3 Internet...................................................................................................................................14-1
14.4 Vor der Kontaktaufnahme... - Before contacting us.................................................................14-1
14.5 Kundenbetreuungsstellen - Sales & Service Facilities.............................................................14-2
15 Index 15-1

MKE Introduction to the Product 1-1
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
1 Introduction to the Product
1.1 MKE
The MKE-servo motors of the second generation fulfill the specifications
according to ATEX and UL/CSA in one class. This permitts the
worldwide use of Rexroth MKE-motors with one machine design only.
In connection with the drive devices of Rexroth, the MKE-servomotors
generates drive systems with high functionality for the use in hazardous
areas.
MKE-motors are available in the following power spectrum:
Fig. 1-1: MKE power graduation
MKE motors are characterized by the following advantages:
•The motor construction in “Flameproof Enclosures “d” ” according to
EN 50 014 : 1992
•High operational reliability
•Maintenance-free operation (owing to the brushless design and use
of bearings grease-lubricated for their entire service life)
•Use under adverse environmental conditions is possible (owing to the
completely closed motor design in IP 65 degree of protection
•Overload protection (by means of motor-temperature control)
•High performance data
•High dynamics (owing to the favorable ratio of torque to inertia mass)
•High overload capability (owing to the favorable heat dissipation from
the stator windings to the outside wall of the motor housing)
•Peak torque utilizable across a wide speed range (owing to electronic
commutation)
•Continuous start-stop operation possible with high repeat frequencies
(owing to electrical commutation)
•Easy attachment to the machine (owing to flange according to DIN
42948) 11.65)
•Any installation position desired
•Simple and fast commissioning (by data memory)
Performance list
Performance feature
Motor Drehzahl
MKE037B 9000
MKE047B 6000
MKE098B 3200
MKE118B 2000, 4000
MKE118D Lüfter 2000
Drehmoment Nm
35 40 45 5010 15 2052530

1-2 Introduction to the Product MKE
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
MKE motors are permanent-magnet motors with electronic commutation.
Special magnet materials permit the motors to be designed with low
inertia masses. The following figure shows the principal design of MKD
motors.
23
4
56
8
9
3
10
1
7
MG000011v01_NN.FH10
(1): Shaft
(2): Stator with winding
(3): Bearing
(4): Motor encoder
(5): Connection unit
(6): Terminal box lid
(7): Holding brake (optional)
(8): Grounding clamp
(9): Shaft sealing ring
(10): Rotor with permanent magnets
Fig. 1-2: Design of MKE motors
Constructions
MHE motors are available in various designs. Conditional upon existing
national instructions and standards, the MKE motors have to be
defferentiated from the housing according to:
•E according to European Standard (EU) and
•U according to American Standard (UL)
unterteilt werden.
The connection technology of the MKE motors is variously processed
according to the national instructions.
Note: Please heed the notes according to the guilty national
instructions in the chapter “Application Notes”.
Design and components

MKE Introduction to the Product 1-3
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
1.2 About this documentation
Structure of this Document Edition
The present documentation contains safety regulations, technical data,
and operating instructions for MKE motors. The individual chapters can
be subdivided into the following focal points:
Chapter Title Content
1 Introduction to the Product General information
2 Important Instructions on Use
3 Safety notes Safety
4 Technical data
5 Dimensional Details
6 Type Code
Product description
(for planners and machine
constructors)
7 Accessories and Options
8 Connection System
9 Operating condition and application
instructions
10 Handling, Transport and Storage
11 Installation
12 Startup, Operation and Maintenance
Practical
(for operating and
maintenance personnel)
13 Appendix
14 Service and Support
15 Index
General information
Fig. 1-3: Document Structure

1-4 Introduction to the Product MKE
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
Modifications as Compared with the Predecessor
Version
The following list shows the modifications as compared with the
predecessor version DOK-MOTOR*-MKE*GEN2***-PR02 -EN-P
Where? What?
Chapter 3.9 Safety note “Protection against contact with hot parts”appendix.
Chapter 4.4 New: Technical data and characteristic curve MKE098B-058
Chapter 4.5 New: Technical data and characteristic curve MKE118D-035
Chapter 6.4 New: Type code size 098
Chapter 9.1 Revision of section “Application conditions for motors MKE”.
Chapter 11.4 Fig. 1-4: Grommets for Ex-threads (adjustment of grommet size for
encoders)
Chapter 12.4 Maintenance –battery change
Fig. 1-5: Modifications
Note: This list does not lay claim to completeness. The author
reserves the right to neglect minor modifications in this list.

MKE Introduction to the Product 1-5
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
Additional documentation
Note: If the present documentation contains references to
advanced documentations, the version of the latter is always
represented in bold and underlined type (e.g. 06). If
documentations are ordered, their version may be a higher
one!
Standards
This documentation refers to German, European and international
technical standards. Documents and sheets on standards are subject to
copyright protection and may not be passed on to third parties by
Rexroth. If necessary, please address the authorized sales outlets or, in
Germany, directly to:
BEUTH Verlag GmbH
Burggrafenstrasse 6
10787 Berlin
Phone +49-(0)30-26 01-22 60, Fax +49-(0)30-26 01-12 60
Internet: http://www.din.de/beuth
E-mail: postmaster@beuth.de
Outside Systems
Documentation for external systems which are connected to Rexroth
components are not included in the scope of delivery and must be
ordered directly from the particular manufacturers.
Feedback
Your experiences are an essential part of the process of improving both
product and documentation.
Please do not hesitate to inform us of any mistakes you detect in this
documentation or of any modifications you might desire. We would
appreciate your feedback.
Please send your remarks to:
Bosch Rexroth AG
Dep. BRC/EDM2
Bürgermeister-Dr.-Nebel-Strasse 2
D-97816 Lohr, Germany
Fax +49 (0) 93 52 / 40-43 80

1-6 Introduction to the Product MKE
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P

MKE Important Instructions on Use 2-1
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
2 Important Instructions on Use
2.1 Intended Use
Introduction
In their design and manufacture, the products by Bosch Rexroth reflect
the latest state of technology. Before they are delivered, they are
checked for their operationally safe state.
The products may only be used as intended. If they are not used as
intended, situations may arise resulting in injuries to property and
persons.
Note: For damage caused by products not being used as intended,
Bosch Rexroth, as manufacturers, do not give any warranty,
assume any liability, or pay any damages. Any risks resulting
from the products not being used as intended, are the sole
responsibility of the user.
Before using Bosch Rexroth products, the following requirements must
be fulfilled so as to ensure that they are used as intended:
•Anybody handling one of our products in any manner must read and
understand the appropriate safety instructions and the intended use.
•If they are hardware components, the products concerned must be
left in their original state, i.e. it is not permitted to modify them
structurally. Software products may not be decompiled; their source
codes may not be altered.
•Damaged or defective products may not be installed or put into
operation.
•It must be ensured that the products are installed, operated and
serviced according to the regulations and environmental conditions
specified in the documentation.

2-2 Important Instructions on Use MKE
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
Fields of Use and Application
AC servo motors of the MKE series by Bosch Rexroth are intended to be
used as servo and main drive motors. The following are typical fields of
application:
•Machine tools
•Printing and paper-processing machines
•varnish plants,
•Automation and handling
Unit types with different driving powers and different interfaces are
available for an application-specific use of the motors.
Controlling and monitoring of the motors may require connection of
additional sensors and actuators.
Note: The motors may only be used with the accessories specified
in the documentation. Components which are not expressly
named may neither be mounted nor connected. The same
applies to cables and lines.
The motors may be operated only in the expressly specified
component configurations and combinations and with the
software and firmware specified in the appropriate functional
description.
Any connected drive controller must be programmed before startup, in
order to ensure that the motor executes the functions specific to the
particular application.
The motors may only be operated under the assembly, mounting and
installation conditions, in the position of use, and under the
environmental conditions (temperature, degree of protection, humidity,
EMC, and the like) specified in this documentation.
2.2 Non-Intended Use
Any use of the motors outside of the fields of application mentioned
above or under operating conditions and technical data other than those
specified in this documentation are considered to be “non-intended use”.
MKE motors may not be used if . . .
•environmental conditions at the installation location requires a higher
explosion protection than indicated at the motor type plate.
•they are subjected to operating conditions which do not comply with
the environmental conditions described above (e.g. operation under
water, under extreme variations in temperature or extreme maximum
temperatures is not permitted),
•the intended fields of application have not been expressly released
for the motors by Bosch Rexroth. Please be absolutely sure to
observe the statements made in the general safety instructions.

MKE Safety Instructions for Electric Drives and Controls 3-1
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
3 Safety Instructions for Electric Drives and Controls
3.1 Introduction
Read these instructions before the initial startup of the equipment in
order to eliminate the risk of bodily harm or material damage. Follow
these safety instructions at all times.
Do not attempt to install or start up this equipment without first reading
all documentation provided with the product. Read and understand these
safety instructions and all user documentation of the equipment prior to
working with the equipment at any time. If you do not have the user
documentation for your equipment, contact your local Bosch Rexroth
representative to send this documentation immediately to the person or
persons responsible for the safe operation of this equipment.
If the equipment is resold, rented or transferred or passed on to others,
then these safety instructions must be delivered with the equipment.
WARNING
Improper use of this equipment, failure to follow
the safety instructions in this document or
tampering with the product, including disabling
of safety devices, may result in material
damage, bodily harm, electric shock or even
death!
3.2 Explanations
The safety instructions describe the following degrees of hazard
seriousness in compliance with ANSI Z535. The degree of hazard
seriousness informs about the consequences resulting from non-
compliance with the safety instructions.
Warning symbol with signal
word Degree of hazard seriousness according
to ANSI
DANGER
Death or severe bodily harm will occur.
WARNING
Death or severe bodily harm may occur.
CAUTION
Bodily harm or material damage may occur.
Fig. 3-1: Hazard classification (according to ANSI Z535)

3-2 Safety Instructions for Electric Drives and Controls MKE
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
3.3 Hazards by Improper Use
DANGER
High voltage and high discharge current!
Danger to life or severe bodily harm by electric
shock!
DANGER
Dangerous movements! Danger to life, severe
bodily harm or material damage by unintentional
motor movements!
WARNING
High electrical voltage due to wrong
connections! Danger to life or bodily harm by
electric shock!
WARNING
Health hazard for persons with heart
pacemakers, metal implants and hearing aids in
proximity to electrical equipment!
CAUTION
Surface of machine housing could be extremely
hot! Danger of injury! Danger of burns!
CAUTION
Risk of injury due to improper handling! Bodily
harm caused by crushing, shearing, cutting and
mechanical shock or incorrect handling of
pressurized systems!
CAUTION
Risk of injury due to incorrect handling of
batteries!

MKE Safety Instructions for Electric Drives and Controls 3-3
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
3.4 General Information
•Bosch Rexroth AG is not liable for damages resulting from failure to
observe the warnings provided in this documentation.
•Read the operating, maintenance and safety instructions in your
language before starting up the machine. If you find that you cannot
completely understand the documentation for your product, please
ask your supplier to clarify.
•Proper and correct transport, storage, assembly and installation as
well as care in operation and maintenance are prerequisites for
optimal and safe operation of this equipment.
•Only persons who are trained and qualified for the use and operation
of the equipment may work on this equipment or within its proximity.
•The persons are qualified if they have sufficient knowledge of the
assembly, installation and operation of the equipment as well as
an understanding of all warnings and precautionary measures
noted in these instructions.
•Furthermore, they must be trained, instructed and qualified to
switch electrical circuits and equipment on and off in accordance
with technical safety regulations, to ground them and to mark them
according to the requirements of safe work practices. They must
have adequate safety equipment and be trained in first aid.
•Only use spare parts and accessories approved by the manufacturer.
•Follow all safety regulations and requirements for the specific
application as practiced in the country of use.
•The equipment is designed for installation in industrial machinery.
•The ambient conditions given in the product documentation must be
observed.
•Use only safety features and applications that are clearly and
explicitly approved in the Project Planning Manual.
For example, the following areas of use are not permitted:
construction cranes, elevators used for people or freight, devices and
vehicles to transport people, medical applications, refinery plants,
transport of hazardous goods, nuclear applications, applications
sensitive to high frequency, mining, food processing, control of
protection equipment (also in a machine).
•The information given in the documentation of the product with
regard to the use of the delivered components contains only
examples of applications and suggestions.
The machine and installation manufacturer must
•make sure that the delivered components are suited for his
individual application and check the information given in this
documentation with regard to the use of the components,
•make sure that his application complies with the applicable safety
regulations and standards and carry out the required measures,
modifications and complements.
•Startup of the delivered components is only permitted once it is sure
that the machine or installation in which they are installed complies
with the national regulations, safety specifications and standards of
the application.

3-4 Safety Instructions for Electric Drives and Controls MKE
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
•Operation is only permitted if the national EMC regulations for the
application are met.
The instructions for installation in accordance with EMC requirements
can be found in the documentation "EMC in Drive and Control
Systems".
The machine or installation manufacturer is responsible for
compliance with the limiting values as prescribed in the national
regulations.
•Technical data, connections and operational conditions are specified
in the product documentation and must be followed at all times.

MKE Safety Instructions for Electric Drives and Controls 3-5
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
3.5 Protection Against Contact with Electrical Parts
Note: This section refers to equipment and drive components with
voltages above 50 Volts.
Touching live parts with voltages of 50 Volts and more with bare hands
or conductive tools or touching ungrounded housings can be dangerous
and cause electric shock. In order to operate electrical equipment,
certain parts must unavoidably have dangerous voltages applied to
them.
DANGER
High electrical voltage! Danger to life, severe
bodily harm by electric shock!
⇒Only those trained and qualified to work with or on
electrical equipment are permitted to operate, maintain
or repair this equipment.
⇒Follow general construction and safety regulations
when working on high voltage installations.
⇒Before switching on power the ground wire must be
permanently connected to all electrical units according
to the connection diagram.
⇒Do not operate electrical equipment at any time, even
for brief measurements or tests, if the ground wire is
not permanently connected to the points of the
components provided for this purpose.
⇒Before working with electrical parts with voltage higher
than 50 V, the equipment must be disconnected from
the mains voltage or power supply. Make sure the
equipment cannot be switched on again unintended.
⇒The following should be observed with electrical drive
and filter components:
⇒Wait five (5) minutes after switching off power to allow
capacitors to discharge before beginning to work.
Measure the voltage on the capacitors before
beginning to work to make sure that the equipment is
safe to touch.
⇒Never touch the electrical connection points of a
component while power is turned on.
⇒Install the covers and guards provided with the
equipment properly before switching the equipment on.
Prevent contact with live parts at any time.
⇒A residual-current-operated protective device (RCD)
must not be used on electric drives! Indirect contact
must be prevented by other means, for example, by an
overcurrent protective device.
⇒Electrical components with exposed live parts and
uncovered high voltage terminals must be installed in a
protective housing, for example, in a control cabinet.

3-6 Safety Instructions for Electric Drives and Controls MKE
DOK-MOTOR*-MKE*GEN2***-PR03-EN-P
To be observed with electrical drive and filter components:
DANGER
High electrical voltage on the housing!
High leakage current! Danger to life, danger of
injury by electric shock!
⇒Connect the electrical equipment, the housings of all
electrical units and motors permanently with the
safety conductor at the ground points before power is
switched on. Look at the connection diagram. This is
even necessary for brief tests.
⇒Connect the safety conductor of the electrical
equipment always permanently and firmly to the
supply mains. Leakage current exceeds 3.5 mA in
normal operation.
⇒Use a copper conductor with at least 10 mm²cross
section over its entire course for this safety conductor
connection!
⇒Prior to startups, even for brief tests, always connect
the protective conductor or connect with ground wire.
Otherwise, high voltages can occur on the housing
that lead to electric shock.
3.6 Protection Against Electric Shock by Protective Low
Voltage (PELV)
All connections and terminals with voltages between 0 and 50 Volts on
Rexroth products are protective low voltages designed in accordance
with international standards on electrical safety.
WARNING
High electrical voltage due to wrong
connections! Danger to life, bodily harm by
electric shock!
⇒Only connect equipment, electrical components and
cables of the protective low voltage type (PELV =
Protective Extra Low Voltage) to all terminals and
clamps with voltages of 0 to 50 Volts.
⇒Only electrical circuits may be connected which are
safely isolated against high voltage circuits. Safe
isolation is achieved, for example, with an isolating
transformer, an opto-electronic coupler or when
battery-operated.
This manual suits for next models
5
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